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34 minutes ago, photron said:
Did you start you test with the IMU Brick in green calibration state, see:
https://www.tinkerforge.com/en/doc/Hardware/Bricks/IMU_V2_Brick.html#calibration
Do you have anything near to the IMU Brick that produces a (changing) magnetic field? For example, try to stay away from monitors even modern TFT ones. Try moving the IMU Brick near to a running monitor without rotating it and see that the orientation will rotate due to the magnetic fields of the monitor.
Thank You for your response,
I did calibrate it and saved the calibration, but do you mean that before I start I have to wait until the calibration state value is 0b111111 ?
I don't have any varying magnetic field source around the device, but is a piece of metal considered a source of changing mag. field?
I did the test again and that is the output [Heading] for each time I move the imu and bring it back to its initial position:
[130, 135.12, 135.06, 131.81, 130.4, 136.56, 137.6, 135.19, 136.25, 131.81, 135.31]
Still varies within 6 degrees in the same orientation.
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Hello,
I am using imu v2 brick and the heading is drifting each time i move the imu around then, bring it back to the original orientation
here, graph of my data
Data File : https://drive.google.com/open?id=10oZmZbXHNbt_hVxKdvHcBp-fRI97i6LU
at start the heading value is "359.6"
after moving the imu around it was "132.25"
moving it around again it was "133.3"
i have 2 problems here,
1: the change from 359 to 132 is strange
2: drift from 132 to 133 .. sometimes it goes high up to 20 degrees drift
I also noticed that there is a drift in magZ mainly so, any suggestions ?
Thank You,
Mag and Heading Drift in imu 2 brick
in General Discussion
Geschrieben
Thank you rtrbt,
I tried many calibrations and all are the same, the error still high for me, sometimes it goes as high as 20 degrees
as i mentioned in the original post,
So, i don't think it is only calibration problem.
Thank you steve,
Can you tell me which imu you went for ?
Again, thank you
Going for something that is sensitive to magnetic isn't a good choice for me as i need it to work outdoors with another cars around and other field sources that i can't avoid
So in words you are telling me that this is the best i can get from the tinker brick, and I can only recalibrate it every time i see something like that [which isn't doable for me it will be mounted in a vehicle without ability to move it around for calibration]?